Calculate the mole fraction of ethanol if 9.2 g of it is mixed with 1.8 g water.

Explanation

To calculate the mole fraction of ethanol when 9.2 g of it is mixed with 1.8 g of water, follow these steps:

### Step 1: Calculate the number of moles of ethanol
The formula to calculate the number of moles is:
\[ \text{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]
For ethanol (C2H5OH), the molar mass is calculated as follows:
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